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The Olaplex 0 and 3 Combination in 2026: A Practical Guide to Hair Repair

Do you struggle with hair that feels brittle, dull, or damaged from colouring, bleaching, or heat styling? You might be considering an Olaplex treatment, specifically the combination of Olaplex 0 and 3. However, it's important to understand how these products work and whether they are the right choice for your hair type and concerns. This guide provides objective information on the function and use of these two products, so you can make an informed decision.

What is a Bond Building Treatment?

To understand the function of Olaplex, it's helpful to know the basics of hair structure. Our hair consists of millions of disulfide bonds. These bonds are responsible for the hair's strength and elasticity. When hair is exposed to chemical processes (like colouring or perms) or heat, these bonds can break. The result is damaged, porous, and brittle hair.

A bond building treatment is specifically designed to repair these broken disulfide bonds on a molecular level. Unlike a traditional mask that focuses on hydration and smoothing the hair cuticle, a hair repair treatment like Olaplex works inside the hair fibre. The active ingredient in Olaplex, Bis-Aminopropyl Diglycol Dimaleate, is patented and engineered to repair these bonds.

When selecting such a treatment, it is important to pay attention to the product specifications and recommended application. Check if the product is sulfate-free, paraben-free, and phthalate-free—parameters often listed on packaging that complies with EU directives.

Our Recommendations for an Olaplex Treatment

The combination of Olaplex No. 0 and No. 3 is designed as an intensive two-part at-home treatment. No. 0 functions as a primer that prepares the hair, while No. 3 is the actual repair treatment.

1. Olaplex No.0 Intensive Bond Building Treatment 155ml

Olaplex No.0 Intensive Bond Building Treatment

  • Why this product: Olaplex No. 0 is a pre-treatment with, according to the manufacturer, a high concentration of the patented bond building technology. It is designed to serve as the first step in an intensive repair regimen. The liquid formula is intended to fully saturate the hair and prepare it for the absorption of Olaplex No. 3.

  • Benefits (based on product information):

    • Functions as a primer for deeper repair.
    • Contains a high concentration of the active ingredient.
    • Prepares the hair for the No. 3 treatment for an enhanced effect.
  • Who is this for: Individuals with all hair types, especially those with visibly damaged hair, who want to maximise the effectiveness of their Olaplex No. 3 treatment.

View Olaplex No.0 Intensive Bond Building Treatment

2. Olaplex Hair Perfector No. 3 100ml

Olaplex Hair Perfector No. 3

  • Why this product: Olaplex No. 3 is the core of the at-home treatment. It is not a conditioner, but a bond builder that repairs and strengthens the broken disulfide bonds in the hair. This product can be used on its own, but the manufacturer states that its effect is intensified when preceded by No. 0.

  • Benefits (based on product information):

    • Repairs damaged hair and helps to strengthen the hair structure.
    • Reduces breakage and improves texture.
    • Formula is vegan, paraben-free, sulfate-free, and phthalate-free.
    • Suitable for all hair types.
  • Who is this for: Individuals with damaged, brittle, or chemically treated hair who are looking for an effective at-home treatment to strengthen their hair structure.

View Olaplex Hair Perfector No. 3

The Correct Use of Olaplex 0 and 3: Step-by-Step Guide

For the correct application of the two-part treatment, follow the manufacturer's instructions. Incorrect application can lead to suboptimal results.

  1. Step 1: Apply No. 0. Start with dry hair. Distribute the Olaplex No. 0 section by section through the hair, from roots to ends. Ensure the hair is fully saturated, but not dripping wet.
  2. Step 2: Let it process. Allow the No. 0 to process for 10 minutes. Do not rinse the product out.
  3. Step 3: Apply No. 3. Apply the Olaplex No. 3 directly over the No. 0. Distribute the product evenly and comb through to ensure good coverage.
  4. Step 4: Let it process again. Allow the combination of both products to process for at least another 10 minutes. According to Olaplex, the treatment can be left on for longer on very damaged hair.
  5. Step 5: Rinse and wash. Rinse the treatment thoroughly from the hair. Follow with your regular washing routine, preferably with a shampoo and conditioner.

This complete Olaplex treatment can be applied weekly, depending on the level of damage.

Looking for Other Hair Care?

While the combination of Olaplex 0 and 3 is a targeted solution for repairing disulfide bonds, there are also other hair treatments that focus on hydration, nutrition, or shine. If you are looking for a broader range or a product for a different specific hair problem, you can view our full Hair Treatments category for more options.

Frequently Asked Questions (FAQ)

1. How often should I use Olaplex 0 and 3? For moderately damaged hair, a weekly application is recommended. For severe damage, the frequency can be increased to two to three times a week, according to the manufacturer.

2. Can I use Olaplex 3 without Olaplex 0? Yes, Olaplex No. 3 can be used as a standalone treatment. However, according to Olaplex, No. 0 acts as a primer that is said to increase the effectiveness of No. 3 by 68% by facilitating deeper repair.

3. Is Olaplex suitable for untreated hair? Yes, Olaplex is suitable for all hair types, including untreated (virgin) hair. Hair damage is not only caused by chemical treatments but also by heat from styling tools, UV radiation, and mechanical wear (such as brushing). Olaplex can help repair and prevent this damage.


Written by: Joybuy Product Recommendation Officer